02 / 09 · Faith · Method
Form is not a loophole. Substance is not a vibe.
The central fight in Islamic finance is whether a contract that looks like a lease and pays like a loan is a lease. Both sides have scholars. Only one side has your facility letter.
The Mizan desk · 7 September 2026 · 12 min
Form: AAOIFI and the UK boards specify conditions under which murabaha, ijara, musharakah, and wakala are valid. If those conditions are met — real ownership, real risk, disclosed price, no compounding coupon — the cash-flow may still resemble a mortgage and the contract is still not a loan.
Substance: critics, including a line of academics and the louder half of X, say identity of cash-flow is identity of ruling. Organised tawarruq, commodity murabaha, and a diminishing musharakah that never takes title are exhibits A, B, and C. The sameness charge in Issue 01 is this fight, applied to a front door.
Read default and destruction. Everything else is commentary.
Desk rule
We do not pick a mufti. We pick clauses. Who owns on day one. Who owns if the house burns. Whether late payment enriches the bank. Whether remaining units are a sale. Whether the benchmark is pricing a lease or disguising a coupon. A product can fail form, fail substance, or fail both. Passing a branding test is not passing.
The Hanafi clip that will not die — no riba with a ḥarbī — is a different fight: it tries to make the conventional mortgage lawful without any Islamic form at all. Major UK boards do not underwrite on it. See that piece. Do not mix the fights.